11.8.2 Registering & Releasing Bluetooth Devices to Raspberry Pi

When you connect Raspberry Pi to an external device, you can start the device connection request from Raspberry Pi or from an external Bluetooth device. Depending on who initiates the connection request, the process is slightly different.

11.8 Configuration and Connection of Bluetooth

The Raspberry Pi 3 model B provides Bluetooth functionality as standard. Therefore, without purchasing a separate device, you can easily connect to various devices supporting Bluetooth around Raspberry Pi, such as mobile devices, and do an interesting works easily.

To configure Bluetooth settings, you can use the Bluetooth menu in the [Tools] area of the Desktop window.

11.6.2 How to Set up Static IP Address in Raspberry Pi

The default setting for the IP address in the Raspberry Pi system is stored in “/etc/network/interfaces” file. Normally, the contents as follows are stored.

iface lo inet lookback

iface eth0 inet dhcp

iface wlan0 inet dhcp

wpa-ssid “wifissid”

wpa-psk “wifipassword”

11.6 Setting Static IP Address

Normally, when connecting a computer to a network, it is general that the computer is automatically assigned the IP address from the DHCP server, but the IP address for each computer can be fixed as needed. As a method for fixing IP address for a specific computer, there are method of assigning the IP address by setting “manual IP allocation” in the DHCP server and method of assigning the IP address in the individual computer.

11.6.1 How to Specify Static IP Address on DHCP Server

In a typical small network, such as a home or small office, the network is configured so that a router acts as a DHCP server. In this method, a DHCP server may specifies a fixed IP address predefined for a specific computer. Then, when the computer connects to the network, it is assigned the predefined fixed IP address. At this time, you usually use the Mac address assigned to the computer hardware to distinguish a specific computer.

11.5.2 Setting Wireless Connection with Configuration File

The default settings for the network in the Raspberry Pi system are stored in the file “/etc/network/interfaces”. In this file, you can activate the wireless connection by directly entering the settings for the wireless connection.

If you have already configured with the window Wi-Fi configuration tool, it will have the following contents, and you will need to delete all this contents.

11.5 Wireless Connection

Starting with the Raspberry Pi 3 model, Wi-Fi devices are installed by default. So you can use Wi-Fi without buying a separate device. However, to use Wi-Fi on previous Raspberry Pi models, you must purchase and install a separate USB Wi-Fi device.

To connect to the network wirelessly via Wi-Fi, you need to connect to a wireless access point, which requires Wi-Fi settings to connect wirelessly. The window in the Raspbian distribution includes a tool to simplify Wi-Fi configuration.

11.5.1 Setting Wi-Fi with Panel Menu

This section describes the settings of Wi-Fi that are installed by default from the Raspberry Pi 3 model.